U.S. Geological Survey Home AASG Logo USGS HOME CONTACT USGS SEARCH USGS
National Geologic Map Database
Map showing publication footprint
  • Usage in publication:
    • Fort Mountain gneiss
  • Modifications:
    • First used
  • Dominant lithology:
    • Gneiss
  • AAPG geologic province:
    • Piedmont-Blue Ridge province
Publication:

Furcron, A.S., Teague, K.H., and Calver, J.L., 1946, Talc deposits of Murray County, Georgia [abs]: Geological Society of America Bulletin, Chicago, December 26-28, 1946, v. 57, no. 12, pt. 2, p. 1195.


Summary:

Thrust faults supplementary to the mapped overthrust, which separates the eastern crystalline block from known Paleozoic sediments of the Great Valley, bring up a Precambrian biotite augen gneiss, Fort Mountain gneiss, intruded by granite, upon which Ocoee rocks are unconformable. Talc deposits and associated schists, Cohutta schist, occur in upthrust block of Fort Mountain gneiss but not in the Ocoee series.

Source: GNU records (USGS DDS-6; Reston GNULEX).


Map showing publication footprint
  • Usage in publication:
    • Fort Mountain gneiss
  • Modifications:
    • Named
  • Dominant lithology:
    • Gneiss
  • AAPG geologic province:
    • Piedmont-Blue Ridge province
Publication:

Furcron, A.S., Teague, K.H., and Calver, J.L., 1947, Talc deposits of Murray County, Georgia: Georgia Geologic Survey Bulletin, no. 53, 75 p.


Summary:

Fort Mountain gneiss, as mapped, is a complex of igneous and metamorphic rocks that contains numerous bodies of Corbin granite and Cohutta schist. Intruded by Corbin granite. Derivation of name given.

Source: GNU records (USGS DDS-6; Reston GNULEX).


Map showing publication footprint
  • Usage in publication:
    • Fort Mountain Gneiss†
  • Modifications:
    • Abandoned
  • AAPG geologic province:
    • Piedmont-Blue Ridge province
Publication:

Higgins, M.W., Atkins, R.L., Crawford, T.J., Crawford, R.F., III, Brooks, Rebekah, and Cook, R.B., Jr., 1988, The structure, stratigraphy, tectonostratigraphy, and evolution of the southernmost part of the Appalachian Orogen, Georgia and Alabama: U.S. Geological Survey Professional Paper, 1475, 173 p., (incl. geologic map, scale 1:500,000)


Summary:

The Fort Mountain Gneiss of Furcron and others (1947) is abandoned. Its rocks are here assigned to the Corbin Gneiss of the Allatoona Complex, to which it is lithically identical. The two are in the same stratigraphic position and are the same age.

Source: GNU records (USGS DDS-6; Reston GNULEX).


Map showing publication footprint
  • Usage in publication:
    • "Fort Mountain Gneiss"
  • Modifications:
    • Overview
  • AAPG geologic province:
    • Piedmont-Blue Ridge province
Publication:

Greene, R.C., 1995, Talc resources of the conterminous United States: U.S. Geological Survey Open-File Report, OF-95-586, 178 p., (incl. geologic map, scale 1:5,000,000)


Summary:

Used as "Fort Mountain Gneiss" because term was previously abandoned.

Source: GNU records (USGS DDS-6; Reston GNULEX).


Search archives

For more information, please contact Nancy Stamm, Geologic Names Committee Secretary.

Asterisk (*) indicates published by U.S. Geological Survey authors.

"No current usage" (†) implies that a name has been abandoned or has fallen into disuse. Former usage and, if known, replacement name given in parentheses ( ).

Slash (/) indicates name conflicts with nomenclatural guidelines (CSN, 1933; ACSN, 1961, 1970; NACSN, 1983, 2005, 2021). May be explained within brackets ([ ]).

Accessibility FOIA Privacy Policies and Notices

USA Gov U.S. Department of the Interior | U.S. Geological Survey
Supported by the National Cooperative Geologic Mapping Program
Page Contact Information: Personnel
Page Last Modified: Thu 04 Apr 2024 03:20:09 PM MDT